Toggle



April 1, 1930. c. s. MORRISON TOGGLE Filed Aug. 10, 1928 Patented Apr.1, 1930 UNITED STATES CHARLES S. MORRISON, OF ELKINS PARK, PENNSYLVANIA,ASSIGNOR TO PROCTOR 8t PATENT OFFICEv SCHWARTZ, INCORPORATED, OFPHILADELPHIA, PENNSYLVANIA, A CORPORATION or PENNSYLVANIA;

TOGGLE My invention relates to certain improvements in toggles used instretching leather on frames, such as shown and described in myco-pending application, Serial No. 273,352, filed April 27, 1928. r

In this type of toggle there is a hook at the back of the toggle whichextends through one of the perforations in a supporting plate or throughthe meshes of a wire screen, so that after the toggle has been operatedtogrip the leather the leather can be drawn tight, and when the hookengages the frame the tension of the leather through the hook actuatesthe gripping mechanism, so that as the leather shrinks, the grip of thetoggle Wlll be correspondingly increased.

The present invention relates to certa n improved details ofconstruction which Wlll be fully described hereinafter.

In the accompanying drawings:

Figure 1 is a side view of a toggle made in accordance with myinvention;

Fig. 2 is a longitudinal sectional elevation;

Fig. 3 is a front end View of the toggle in its open condition toreceive a leather;

Fig. 4 is a detached perspective .v ew of the upper jaw;

Fig. 5 is a detached perspective view of the lower jaw; and

Fig. 6 is a longitudinal sectional elevation of a modified form of theinvention.

Referring to the drawings, 1 is the body of the toggle which is made ofpressed sheet metal having a base 2, integral sides 3-3, and a loopedrear section 4 which forms a handhold for the operator when using thetoggle.

The. upper portion of the-handhold 4 is cut away at 5 to form lateralprojections 6, which extend through perforations in the side members 3-3and are riveted as shown so as to rigidly secure the upper portion ofthe handhold to the sides.

7 is an upper jaw mounted on a-transverse pivot pin 8 whichextendsthrough two side members 33, the ends being riveted as shown in Fig. 1.The upper jaw is U-shaped in cross-section, and mounted on the pivot pin8 is a coil spring 9, one end of which rests upon the jaw as shown inFig. 2 and the other end bent to extend through a hole 10 in one of theside member's 3.

The jaw 7 is held in the open position as shown in Fig. 2 by the spring9, and is closed by an operating lever 11. The lever 11 isv pivoted on across-bar 12 which. extends from one side member to the other, the leverbeing provided witha roller 13 mounted on a crossbar 1% extending fromone side flange 15 of the lever to the other side flange. This roller 13rests under the heel of the jaw 7 and when the lever 11 is moved fromits raised position shown in Fig. 2 to the position shown in Fig. 1, itcloses the jaw 7 and holds it in its closed position as shown in Fig.-1.

a The lower jaw 16 is shaped as shown in Fig. 5 and has a serratedsurface 17, the rear end of the jaw being rounded as shown at 18 so asto prevent the jaw cuttin the leather when pressure is applied. The awhas side members 19 which are perforated for the passage of a pivot pin20. The serrated surface of the jaw is eccentric to this pivot, so thatwhen it is turned on the pivot it will grip the leather when the upperjaw 7 is closed.

A coil spring 21 is mounted on the pin'20. One end of this spring restsagainst the underside of the lower jaw 16 while the other end of thespring rests against a plate 22 which is mounted portion. a

The plate 22 is notched at each side as shown at 23, and extending intoeach notch is a tongue 24.,which projects from each side 19 of the lowerjaw 16. These tongues preferably extend into slots 25 in the base 2 ofthe toggle. 3

Mounted on the cross-bar .12. is a hook 26. This hook extends through aslot 27 in the-plate 22 and through a slot 28 in the base 2 of the bodyportion. The hook on the base of the body I is shaped as shown in Fig.2, and when the toggle grips the leather 6, the hook 26 is passedthrough one of the perforations in hook in turn moving the plate 22, andas the plate 22 is engaged by'the tongues 24. the l plate 22 will turnthe lower jaw on its pivot and increase its pressure upon the leather,thus increasing the grip of the toggle. The leather can be quicklyreleased from the toggle by turning the lever 11 to the position shownin Fig. 2, when theupper jaw will be raised.

Upon referring to Fig. 1, it will be noted that the side members 33 arecut away as at 30 to form athroat into which the edge of the leatherprojects when gripped between ,the jaws 7 and 16.

In moving from the open leather-receiving position to the closedleatherwgripping position the leather-engaging face of the upper jaw 17and the leather-engaging faceof the lower jaw 16 move toward the rearedge of the throat 30, and carry the leather with and between themtoward said edge.

To prevent the leather from engaging the said rear edge of the throat30, which would efiect a crimping of the edge of the leather when thejaws are closed. I provide, on one of the jaws, a stop adapted to beengaged by the edge of the leather. This stop is adapted to move withthe leather during the gripping operation and to assume a position infront of, or at least in line with, the said rear edge of the throat 30,when the jaws are closed. Thus the edge of the leather is prevented fromengaging the said rigid inner or rear edge of the throat, consequentlythe leather remains fiat and no crimping of the edgeof the leatheroccurs.

In Figs. 1 and 2, I have shown this stop as consisting of a projection31 extending from the leather-engaging plane portion 32 of the upper jaw7 into a cavity 33 formed between the curved portions 18 of the lowerjaw 16.

As shown in Fig. 4, the projection 31 is formed integral with the planeportion 32 of the jaw 7 by cutting the jaw as shown and bending theportion outlined by the cut at substantially a right angle to the planeportion 32 of the jaw.

As shown in Fig. 5, the cavity 33 is formed between the curved portions18 'of the lower jaw 16 by cutting said curved portion away from itsrear edge inwardly.

In Fig. 6, I have shown the stop as being carried by the lower jaw 16,and consisting of bending the rear edge of the curved portions 18 of thejaw 16 upwardly to form the stop 31, which is adapted to fit into acavity or slot 33 formed in the plane portion 32 of the upper jaw 7.

I claim:

1. The combination in a toggle of a body portion, a pair of spaced jawscarried by and movable toward said body portion and movable toward eachother to grip a sheet of material between the jaws, and a stop carriedby one of said jaws and extending toward the other of said jaws, saidstop being movable with said jawstoward said body portion and adaptedwhensaid jaws are in the material gripping position to prevent thegripped material from engaging the body portion of the toggle.

2. The combination in atoggle of a body portion, a pair of spaced jawscarried by and movable toward said body portion and movable toward eachother to grip. a sheet of material between the jaws, and a stop carriedby one of said jaws and extending toward the other of said jaws and intoa cavity formed in said second jaw, said stop being movable with saidjaw toward said body portion and adapted when said jaws are in thematerial gripping position to prevent the gripped material from engagingthe body portion of the toggle.

3. The combination in a toggle of a body portion having a throat formedtherein, a pair of jaws pivotally mounted in said body portion at theopposite sides of said throat respectively and movable toward the rearedge of said throat and toward each other to grip a sheet of materialbetween the jaws. and a stop carried by one of said jaws and extendingtoward the other of said j aws, said stop being movable with said jawtoward the rear edge of said throat and adapted when the jaws are in thematerial gripping position to prevent the edge of the gripped materialfrom engaging the said rear edge of said throat.

4. The combination in a toggle of a body portion having a throat formedtherein, a 1 :3 pair of jaws pivotally mounted in said body portion atthe opposite sides of said throat respectively and movable toward therear edge of said throat and toward each other to grip a sheet ofmaterial between the jaws, and a stop carried by one of said jaws andextending between said jaws and into a cavity formed in said second jaw,said stop being adapted when the jaws are in the material grippingposition to prevent the edge of the 11 gripped material from engagingthe said rear edge of said throat.

5. The combination in a toggle of a frame comprising a base, sidemembers on said base, each side member having a throat formed 11;;therein, a pair of jaws pivotally mounted in said frame between saidside members and at the opposite sides of said throat respectively, saidjaws being movable toward the rear edge of said throat and toward eachother to grip lit a sheet of material between the jaws, and a stopcarried by one of said jaws and extending into a cavity formed in thesecond jaw, said stop being adapted when the jaws are in the materialgripping position to prevent the i edge of the gripped material fromengaging the said rear edge of the throat in each of said side membersof the frame.

CHARLES s. MORRISON.

